01 · Evidence base

Sourced first, summarised second.

Papers enter the index only from indexed journals, preprint servers with public peer review, or registered trial records. Each entry is tagged by study tier so a mouse experiment is never presented as a human result.

Indexed studies by evidence tier
Systematic reviews & meta-analyses	Tier I	112
Randomised controlled trials (human)	Tier II	208
Observational & cohort studies	Tier III	254
Animal & in vitro mechanism work	Tier IV	710

03 · What the data looks like

Every record carries its provenance.

Title, authors, journal, year, design, model organism, sample size and the identifier needed to pull the paper yourself. No affiliate links, no supplement storefront.

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Records in index

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Citations resolvable

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Median review turnaround

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Sponsored entries

Important notice · Please read

No medical advice. PeptideCrux is an educational literature index. Nothing on this site is medical, clinical, diagnostic or treatment advice, and no material here establishes a doctor–patient relationship. Always consult a licensed clinician before acting on anything you read.

Investigational compounds. The majority of peptides indexed here are investigational research chemicals that are not approved by the FDA, EMA or any comparable regulator for human use. We do not sell, supply, source or recommend any compound, dose or protocol.

Accuracy. Summaries are our reading of the cited primary sources and may contain errors, omissions or outdated information. Citations are provided so you can verify every claim yourself. Linking to a paper is not endorsement of its conclusions.

Assumption of risk & hold harmless. You use this site entirely at your own risk and agree to release, indemnify and hold harmless PeptideCrux and its operators from any claim or loss arising from your use of this information. See the full disclaimer.

Disclaimer Terms of use PrivacyLast updated 4 September 2026